JPH0174992U

JPH0174992U -

Info

Publication number: JPH0174992U
Application number: JP1987171201U
Authority: JP
Priority date: 1987-11-09
Filing date: 1987-11-09
Publication date: 1989-05-22

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例における自動二輪車
のスイングアーム装置の横断平面図、第２図は同
概略縦断正面図、第３図は第２図における―
断面矢視図、第４図は別の実施例における自動二
輪車のスイングアーム装置の要部の概略縦断正面
図、第５図は第４図における―断面矢視図、
第６図はさらに別の実施例における自動二輪車の
スイングアーム装置の要部の断面図である。２……出力軸、５……ピボツトシヤフト、８…
…車体フレーム、２１……チエーンカバー、２８
……車軸、４５……第２のチエーン（チエーン）
、４８〜５１……振動防止部材、６８……ローラ
（振動防止部材）、７０……手前側部分（振動防
止部材）。 FIG. 1 is a cross-sectional plan view of a swing arm device for a motorcycle according to an embodiment of the present invention, FIG. 2 is a schematic longitudinal sectional front view of the same, and FIG.
4 is a schematic longitudinal sectional front view of the main parts of a swing arm device for a motorcycle in another embodiment; FIG. 5 is a sectional view taken in the direction of arrows in FIG. 4;
FIG. 6 is a sectional view of a main part of a swing arm device for a motorcycle in yet another embodiment. 2... Output shaft, 5... Pivot shaft, 8...
...Body frame, 21...Chain cover, 28
... Axle, 45 ... Second chain (chain)
, 48-51...Vibration prevention member, 68...Roller (vibration prevention member), 70... Front side portion (vibration prevention member).

Claims

[Claims for Utility Model Registration] (1) In a motorcycle that has a pivot shaft parallel to the output shaft of the engine at the rear of the engine, and transmits power from the output shaft of the engine to the axle of the rear wheel via this pivot shaft portion. A chain cover that covers a chain that transmits power from the pivot shaft portion to the axle of the rear wheel doubles as a cantilevered swing arm, and the front end of the chain cover that also serves as the swing arm is swingably attached to the vehicle body frame. , and a pair of anti-vibration members are provided in an intermediate portion between the vicinity of the pivot shaft of the chain cover and the vicinity of the axle of the rear wheel, the center of swing of which is aligned with the axis of the pivot shaft, and the vibration prevention members are closely opposed to the chain from above and below. A swing arm device for a motorcycle, characterized in that: (2) The swing arm device for a motorcycle according to claim 1, wherein the pair of anti-vibration members are provided on each of the upper and lower movement paths of the chain. (3) The swing of the motorcycle according to claim 1 or 2, wherein the vibration prevention member is made of a plate-shaped hard resin and is fitted to the chain cover. arm device. (4) The vibration prevention member is constituted by a hard resin roller and is rotatably attached to the chain cover. Swing arm device for two-wheeled vehicles. (5) The swing of the motorcycle according to claim 1 or 2, wherein the vibration prevention member is constituted by the chain cover itself by making a part of the chain cover made of hard resin. arm device.